Organic peroxides are prone to exothermic decomposition at room or high temperatures. Heating, contact with impurities (such as acids, heavy metal compounds, amines), friction or collision can cause decomposition.Organic peroxides are classified into 7 types based on their level of danger.

Type A: refers to organic peroxides that are prone to detonation or rapid detonation, or exhibit violent effects when heated in a closed state. Due to their sensitive and explosive nature, they should be treated as explosives.

Type B: Refers to organic peroxides that are explosive and do not ignite quickly during packaging and transportation, but are prone to thermal explosions inside the package, such as acetylsulfonylcyclohexane peroxide, tert butyl isobutyrate peroxide, m-chloroperoxybenzoic acid, and methyl ethyl ketone peroxide.

Type C: Refers to organic peroxides that do not explode, do not ignite quickly, and are not prone to heat explosion during packaging and transportation, but still have the potential for explosion, such as tert amyl peroxyneovalerate, tert butyl diethyl acetate, tert butyl peroxy-2-methylbenzoate, etc.

Type D: refers to organic peroxides that exhibit partial detonation but do not rapidly detonate and do not exhibit severe effects during heating tests under closed conditions, or do not detonate but can slowly detonate but do not exhibit severe effects, or do not detonate but exhibit moderate effects during heating tests, such as acetylsulfonylcyclohexane peroxide (content ≤ 32%), tert octyl hydrogen peroxide, etc.

E-type: refers to organic peroxides that do not detonate or deflagrate during heating tests under closed conditions and only exhibit weak effects, such as lauric acid peroxide and tert butyl hydrogen peroxide (content ≤ 79%).

F-type: refers to organic peroxides that exhibit weak or no explosive force, such as hydrogen peroxide diisopropylbenzene, peracetic acid, etc., during heating tests under closed conditions, without causing cavitation or deflagration, only showing weak explosive force or no effect.

G-type: refers to organic peroxides that do not cause cavitation or deflagration during heating tests under closed conditions, and do not exhibit sound effects or any explosive force.